git.maemo.org Git - modest/blob - src/widgets/modest-folder-view.c

   1 /* Copyright (c) 2006, Nokia Corporation
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  * * Redistributions of source code must retain the above copyright
   9  *   notice, this list of conditions and the following disclaimer.
  10  * * Redistributions in binary form must reproduce the above copyright
  11  *   notice, this list of conditions and the following disclaimer in the
  12  *   documentation and/or other materials provided with the distribution.
  13  * * Neither the name of the Nokia Corporation nor the names of its
  14  *   contributors may be used to endorse or promote products derived from
  15  *   this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <glib/gi18n.h>
  31 #include <string.h>
  32 #include <gdk/gdkkeysyms.h>
  33 #include <tny-account-store-view.h>
  34 #include <tny-gtk-account-list-model.h>
  35 #include <tny-gtk-folder-store-tree-model.h>
  36 #include <tny-gtk-header-list-model.h>
  37 #include <tny-folder.h>
  38 #include <tny-account-store.h>
  39 #include <tny-account.h>
  40 #include <tny-folder.h>
  41 #include <tny-camel-folder.h>
  42 #include <tny-simple-list.h>
  43 #include <modest-tny-folder.h>
  44 #include <modest-marshal.h>
  45 #include <modest-icon-names.h>
  46 #include <modest-tny-account-store.h>
  47 #include <modest-text-utils.h>
  48 #include <modest-runtime.h>
  49 #include "modest-folder-view.h"
  50 #include <modest-dnd.h>
  51 #include <modest-platform.h>
  52 #include <modest-account-mgr-helpers.h>
  53 #include <modest-widget-memory.h>
  54
  55 /* 'private'/'protected' functions */
  56 static void modest_folder_view_class_init  (ModestFolderViewClass *klass);
  57 static void modest_folder_view_init        (ModestFolderView *obj);
  58 static void modest_folder_view_finalize    (GObject *obj);
  59
  60 static void         tny_account_store_view_init (gpointer g,
  61                                                  gpointer iface_data);
  62
  63 static void         modest_folder_view_set_account_store (TnyAccountStoreView *self,
  64                                                           TnyAccountStore     *account_store);
  65
  66 static gboolean     update_model           (ModestFolderView *self,
  67                                             ModestTnyAccountStore *account_store);
  68
  69 static void         on_selection_changed   (GtkTreeSelection *sel, gpointer data);
  70
  71 static void         on_account_update      (TnyAccountStore *account_store,
  72                                             const gchar *account,
  73                                             gpointer user_data);
  74
  75 static void         on_accounts_reloaded   (TnyAccountStore *store,
  76                                             gpointer user_data);
  77
  78 static gint         cmp_rows               (GtkTreeModel *tree_model,
  79                                             GtkTreeIter *iter1,
  80                                             GtkTreeIter *iter2,
  81                                             gpointer user_data);
  82
  83 static gboolean     filter_row             (GtkTreeModel *model,
  84                                             GtkTreeIter *iter,
  85                                             gpointer data);
  86
  87 static gboolean     on_key_pressed         (GtkWidget *self,
  88                                             GdkEventKey *event,
  89                                             gpointer user_data);
  90
  91 static void         on_configuration_key_changed         (ModestConf* conf,
  92                                                           const gchar *key,
  93                                                           ModestConfEvent event,
  94                                                           ModestFolderView *self);
  95
  96 /* DnD functions */
  97 static void         on_drag_data_get       (GtkWidget *widget,
  98                                             GdkDragContext *context,
  99                                             GtkSelectionData *selection_data,
 100                                             guint info,
 101                                             guint time,
 102                                             gpointer data);
 103
 104 static void         on_drag_data_received  (GtkWidget *widget,
 105                                             GdkDragContext *context,
 106                                             gint x,
 107                                             gint y,
 108                                             GtkSelectionData *selection_data,
 109                                             guint info,
 110                                             guint time,
 111                                             gpointer data);
 112
 113 static gboolean     on_drag_motion         (GtkWidget      *widget,
 114                                             GdkDragContext *context,
 115                                             gint            x,
 116                                             gint            y,
 117                                             guint           time,
 118                                             gpointer        user_data);
 119
 120 static gint         expand_row_timeout     (gpointer data);
 121
 122 static void         setup_drag_and_drop    (GtkTreeView *self);
 123
 124 enum {
 125         FOLDER_SELECTION_CHANGED_SIGNAL,
 126         FOLDER_DISPLAY_NAME_CHANGED_SIGNAL,
 127         LAST_SIGNAL
 128 };
 129
 130 typedef struct _ModestFolderViewPrivate ModestFolderViewPrivate;
 131 struct _ModestFolderViewPrivate {
 132         TnyAccountStore      *account_store;
 133         TnyFolderStore       *cur_folder_store;
 134
 135         gulong                account_update_signal;
 136         gulong                changed_signal;
 137         gulong                accounts_reloaded_signal;
 138
 139         GtkTreeSelection     *cur_selection;
 140         TnyFolderStoreQuery  *query;
 141         guint                 timer_expander;
 142
 143         gchar                *local_account_name;
 144         gchar                *visible_account_id;
 145         ModestFolderViewStyle style;
 146 };
 147 #define MODEST_FOLDER_VIEW_GET_PRIVATE(o)                       \
 148         (G_TYPE_INSTANCE_GET_PRIVATE((o),                       \
 149                                      MODEST_TYPE_FOLDER_VIEW,   \
 150                                      ModestFolderViewPrivate))
 151 /* globals */
 152 static GObjectClass *parent_class = NULL;
 153
 154 static guint signals[LAST_SIGNAL] = {0};
 155
 156 GType
 157 modest_folder_view_get_type (void)
 158 {
 159         static GType my_type = 0;
 160         if (!my_type) {
 161                 static const GTypeInfo my_info = {
 162                         sizeof(ModestFolderViewClass),
 163                         NULL,           /* base init */
 164                         NULL,           /* base finalize */
 165                         (GClassInitFunc) modest_folder_view_class_init,
 166                         NULL,           /* class finalize */
 167                         NULL,           /* class data */
 168                         sizeof(ModestFolderView),
 169                         1,              /* n_preallocs */
 170                         (GInstanceInitFunc) modest_folder_view_init,
 171                         NULL
 172                 };
 173
 174                 static const GInterfaceInfo tny_account_store_view_info = {
 175                         (GInterfaceInitFunc) tny_account_store_view_init, /* interface_init */
 176                         NULL,         /* interface_finalize */
 177                         NULL          /* interface_data */
 178                 };
 179
 180
 181                 my_type = g_type_register_static (GTK_TYPE_TREE_VIEW,
 182                                                   "ModestFolderView",
 183                                                   &my_info, 0);
 184
 185                 g_type_add_interface_static (my_type,
 186                                              TNY_TYPE_ACCOUNT_STORE_VIEW,
 187                                              &tny_account_store_view_info);
 188         }
 189         return my_type;
 190 }
 191
 192 static void
 193 modest_folder_view_class_init (ModestFolderViewClass *klass)
 194 {
 195         GObjectClass *gobject_class;
 196         gobject_class = (GObjectClass*) klass;
 197
 198         parent_class            = g_type_class_peek_parent (klass);
 199         gobject_class->finalize = modest_folder_view_finalize;
 200
 201         g_type_class_add_private (gobject_class,
 202                                   sizeof(ModestFolderViewPrivate));
 203
 204         signals[FOLDER_SELECTION_CHANGED_SIGNAL] =
 205                 g_signal_new ("folder_selection_changed",
 206                               G_TYPE_FROM_CLASS (gobject_class),
 207                               G_SIGNAL_RUN_FIRST,
 208                               G_STRUCT_OFFSET (ModestFolderViewClass,
 209                                                folder_selection_changed),
 210                               NULL, NULL,
 211                               modest_marshal_VOID__POINTER_BOOLEAN,
 212                               G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 213
 214         /*
 215          * This signal is emitted whenever the currently selected
 216          * folder display name is computed. Note that the name could
 217          * be different to the folder name, because we could append
 218          * the unread messages count to the folder name to build the
 219          * folder display name
 220          */
 221         signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL] =
 222                 g_signal_new ("folder-display-name-changed",
 223                               G_TYPE_FROM_CLASS (gobject_class),
 224                               G_SIGNAL_RUN_FIRST,
 225                               G_STRUCT_OFFSET (ModestFolderViewClass,
 226                                                folder_display_name_changed),
 227                               NULL, NULL,
 228                               g_cclosure_marshal_VOID__STRING,
 229                               G_TYPE_NONE, 1, G_TYPE_STRING);
 230 }
 231
 232
 233
 234 static void
 235 text_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 236                  GtkTreeModel *tree_model,  GtkTreeIter *iter,  gpointer data)
 237 {
 238         ModestFolderViewPrivate *priv;
 239         GObject *rendobj;
 240         gchar *fname = NULL;
 241         gint unread, all;
 242         TnyFolderType type;
 243         GObject *instance = NULL;
 244
 245         g_return_if_fail (column);
 246         g_return_if_fail (tree_model);
 247
 248         gtk_tree_model_get (tree_model, iter,
 249                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 250                             TNY_GTK_FOLDER_STORE_TREE_MODEL_ALL_COLUMN, &all,
 251                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 252                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 253                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &instance,
 254                             -1);
 255         rendobj = G_OBJECT(renderer);
 256
 257         if (!fname)
 258                 return;
 259
 260         if (!instance) {
 261                 g_free (fname);
 262                 return;
 263         }
 264
 265
 266         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE (data);
 267
 268         if (type != TNY_FOLDER_TYPE_ROOT) {
 269                 gint number;
 270
 271                 if (modest_tny_folder_is_local_folder (TNY_FOLDER (instance))) {
 272                         TnyFolderType type;
 273                         type = modest_tny_folder_get_local_folder_type (TNY_FOLDER (instance));
 274                         if (type != TNY_FOLDER_TYPE_UNKNOWN) {
 275                                 g_free (fname);
 276                                 fname = g_strdup(modest_local_folder_info_get_type_display_name (type));
 277                         }
 278                 }
 279
 280                 /* Select the number to show */
 281                 if ((type == TNY_FOLDER_TYPE_DRAFTS) || (type == TNY_FOLDER_TYPE_OUTBOX))
 282                         number = all;
 283                 else
 284                         number = unread;
 285
 286                 /* Use bold font style if there are unread messages */
 287                 if (unread > 0) {
 288                         gchar *folder_title = g_strdup_printf ("%s (%d)", fname, unread);
 289                         g_object_set (rendobj,"text", folder_title,  "weight", 800, NULL);
 290                         if (G_OBJECT (priv->cur_folder_store) == instance)
 291                                 g_signal_emit (G_OBJECT(data),
 292                                                signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 293                                                folder_title);
 294                         g_free (folder_title);
 295                 } else {
 296                         g_object_set (rendobj,"text", fname, "weight", 400, NULL);
 297                         if (G_OBJECT (priv->cur_folder_store) == instance)
 298                                 g_signal_emit (G_OBJECT(data),
 299                                                signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 300                                                fname);
 301                 }
 302
 303         } else {
 304                 const gchar *account_name = NULL;
 305                 const gchar *account_id = NULL;
 306
 307                 /* If it's a server account */
 308                 account_id = tny_account_get_id (TNY_ACCOUNT (instance));
 309                 if (!strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID)) {
 310                         account_name = priv->local_account_name;
 311                 } else {
 312                         if (!strcmp (account_id, MODEST_MMC_ACCOUNT_ID)) {
 313                                 /* TODO: get MMC card name */
 314                         } else {
 315                                 account_name = fname;
 316                         }
 317                 }
 318
 319                 /* Notify display name observers */
 320                 if (G_OBJECT (priv->cur_folder_store) == instance)
 321                         g_signal_emit (G_OBJECT(data),
 322                                        signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 323                                        account_name);
 324
 325                 /* Use bold font style */
 326                 g_object_set (rendobj,"text", account_name, "weight", 800, NULL);
 327         }
 328
 329         g_object_unref (G_OBJECT (instance));
 330         g_free (fname);
 331 }
 332
 333
 334
 335 static void
 336 icon_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 337                  GtkTreeModel *tree_model,  GtkTreeIter *iter, gpointer data)
 338 {
 339         GObject *rendobj = NULL, *instance = NULL;
 340         GdkPixbuf *pixbuf = NULL;
 341         TnyFolderType type;
 342         gchar *fname = NULL;
 343         const gchar *account_id = NULL;
 344         gint unread;
 345
 346         rendobj = G_OBJECT(renderer);
 347         gtk_tree_model_get (tree_model, iter,
 348                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 349                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 350                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 351                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &instance,
 352                             -1);
 353
 354         if (!fname)
 355                 return;
 356
 357         if (!instance) {
 358                 g_free (fname);
 359                 return;
 360         }
 361
 362         if (type == TNY_FOLDER_TYPE_NORMAL || type == TNY_FOLDER_TYPE_UNKNOWN) {
 363                 type = modest_tny_folder_guess_folder_type_from_name (fname);
 364         }
 365
 366         switch (type) {
 367         case TNY_FOLDER_TYPE_ROOT:
 368                 account_id = tny_account_get_id (TNY_ACCOUNT (instance));
 369                 if (!strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID)) {
 370                         pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_LOCAL_FOLDERS);
 371                 } else {
 372                         if (!strcmp (account_id, MODEST_MMC_ACCOUNT_ID))
 373                                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_MMC);
 374                         else
 375                                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_ACCOUNT);
 376                 }
 377                 break;
 378         case TNY_FOLDER_TYPE_INBOX:
 379                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_INBOX);
 380                 break;
 381         case TNY_FOLDER_TYPE_OUTBOX:
 382                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_OUTBOX);
 383                 break;
 384         case TNY_FOLDER_TYPE_JUNK:
 385                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_JUNK);
 386                 break;
 387         case TNY_FOLDER_TYPE_SENT:
 388                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_SENT);
 389                 break;
 390         case TNY_FOLDER_TYPE_TRASH:
 391                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_TRASH);
 392                 break;
 393         case TNY_FOLDER_TYPE_DRAFTS:
 394                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_DRAFTS);
 395                 break;
 396         case TNY_FOLDER_TYPE_NORMAL:
 397         default:
 398                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_NORMAL);
 399                 break;
 400         }
 401         g_object_unref (G_OBJECT (instance));
 402         g_free (fname);
 403
 404         /* Set pixbuf */
 405         g_object_set (rendobj, "pixbuf", pixbuf, NULL);
 406
 407         if (pixbuf != NULL)
 408                 g_object_unref (pixbuf);
 409 }
 410
 411 static void
 412 add_columns (GtkWidget *treeview)
 413 {
 414         GtkTreeViewColumn *column;
 415         GtkCellRenderer *renderer;
 416         GtkTreeSelection *sel;
 417
 418         /* Create column */
 419         column = gtk_tree_view_column_new ();
 420
 421         /* Set icon and text render function */
 422         renderer = gtk_cell_renderer_pixbuf_new();
 423         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 424         gtk_tree_view_column_set_cell_data_func(column, renderer,
 425                                                 icon_cell_data, treeview, NULL);
 426
 427         renderer = gtk_cell_renderer_text_new();
 428         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 429         gtk_tree_view_column_set_cell_data_func(column, renderer,
 430                                                 text_cell_data, treeview, NULL);
 431
 432         /* Set selection mode */
 433         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(treeview));
 434         gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
 435
 436         /* Set treeview appearance */
 437         gtk_tree_view_column_set_spacing (column, 2);
 438         gtk_tree_view_column_set_resizable (column, TRUE);
 439         gtk_tree_view_column_set_fixed_width (column, TRUE);
 440         gtk_tree_view_set_headers_clickable (GTK_TREE_VIEW(treeview), FALSE);
 441         gtk_tree_view_set_enable_search (GTK_TREE_VIEW(treeview), FALSE);
 442
 443         /* Add column */
 444         gtk_tree_view_append_column (GTK_TREE_VIEW(treeview),column);
 445 }
 446
 447 static void
 448 modest_folder_view_init (ModestFolderView *obj)
 449 {
 450         ModestFolderViewPrivate *priv;
 451         ModestConf *conf;
 452
 453         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 454
 455         priv->timer_expander = 0;
 456         priv->account_store  = NULL;
 457         priv->query          = NULL;
 458         priv->style          = MODEST_FOLDER_VIEW_STYLE_SHOW_ALL;
 459         priv->cur_folder_store   = NULL;
 460         priv->visible_account_id = NULL;
 461
 462         /* Initialize the local account name */
 463         conf = modest_runtime_get_conf();
 464         priv->local_account_name = modest_conf_get_string (conf, MODEST_CONF_DEVICE_NAME, NULL);
 465
 466         /* Build treeview */
 467         add_columns (GTK_WIDGET (obj));
 468
 469         /* Setup drag and drop */
 470         setup_drag_and_drop (GTK_TREE_VIEW(obj));
 471
 472         /* Restore conf */
 473         modest_widget_memory_restore (conf, G_OBJECT (obj), MODEST_CONF_FOLDER_VIEW_KEY);
 474
 475         /* Connect signals */
 476         g_signal_connect (G_OBJECT (obj),
 477                           "key-press-event",
 478                           G_CALLBACK (on_key_pressed), NULL);
 479
 480         /*
 481          * Track changes in the local account name (in the device it
 482          * will be the device name)
 483          */
 484         g_signal_connect (G_OBJECT(conf),
 485                           "key_changed",
 486                           G_CALLBACK(on_configuration_key_changed), obj);
 487
 488 }
 489
 490 static void
 491 tny_account_store_view_init (gpointer g, gpointer iface_data)
 492 {
 493         TnyAccountStoreViewIface *klass = (TnyAccountStoreViewIface *)g;
 494
 495         klass->set_account_store_func = modest_folder_view_set_account_store;
 496
 497         return;
 498 }
 499
 500 static void
 501 modest_folder_view_finalize (GObject *obj)
 502 {
 503         ModestFolderViewPrivate *priv;
 504         GtkTreeSelection    *sel;
 505
 506         g_return_if_fail (obj);
 507
 508         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 509
 510         if (priv->timer_expander != 0) {
 511                 g_source_remove (priv->timer_expander);
 512                 priv->timer_expander = 0;
 513         }
 514
 515         if (priv->account_store) {
 516                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 517                                              priv->account_update_signal);
 518                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 519                                              priv->accounts_reloaded_signal);
 520                 g_object_unref (G_OBJECT(priv->account_store));
 521                 priv->account_store = NULL;
 522         }
 523
 524         if (priv->query) {
 525                 g_object_unref (G_OBJECT (priv->query));
 526                 priv->query = NULL;
 527         }
 528
 529         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 530         if (sel)
 531                 g_signal_handler_disconnect (G_OBJECT(sel), priv->changed_signal);
 532
 533         g_free (priv->local_account_name);
 534         g_free (priv->visible_account_id);
 535
 536         G_OBJECT_CLASS(parent_class)->finalize (obj);
 537 }
 538
 539
 540 static void
 541 modest_folder_view_set_account_store (TnyAccountStoreView *self, TnyAccountStore *account_store)
 542 {
 543         ModestFolderViewPrivate *priv;
 544         TnyDevice *device;
 545
 546         g_return_if_fail (MODEST_IS_FOLDER_VIEW (self));
 547         g_return_if_fail (TNY_IS_ACCOUNT_STORE (account_store));
 548
 549         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 550         device = tny_account_store_get_device (account_store);
 551
 552         if (G_UNLIKELY (priv->account_store)) {
 553
 554                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 555                                                    priv->account_update_signal))
 556                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 557                                                      priv->account_update_signal);
 558                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 559                                                    priv->accounts_reloaded_signal))
 560                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 561                                                      priv->accounts_reloaded_signal);
 562
 563                 g_object_unref (G_OBJECT (priv->account_store));
 564         }
 565
 566         priv->account_store = g_object_ref (G_OBJECT (account_store));
 567
 568         priv->account_update_signal =
 569                 g_signal_connect (G_OBJECT(account_store), "account_update",
 570                                   G_CALLBACK (on_account_update), self);
 571
 572         priv->accounts_reloaded_signal =
 573                 g_signal_connect (G_OBJECT(account_store), "accounts_reloaded",
 574                                   G_CALLBACK (on_accounts_reloaded), self);
 575
 576         if (!update_model (MODEST_FOLDER_VIEW (self),
 577                            MODEST_TNY_ACCOUNT_STORE (priv->account_store)))
 578                 g_printerr ("modest: failed to update model\n");
 579
 580         g_object_unref (G_OBJECT (device));
 581 }
 582
 583 static void
 584 on_account_update (TnyAccountStore *account_store, const gchar *account,
 585                    gpointer user_data)
 586 {
 587         if (!update_model (MODEST_FOLDER_VIEW(user_data),
 588                            MODEST_TNY_ACCOUNT_STORE(account_store)))
 589                 g_printerr ("modest: failed to update model for changes in '%s'",
 590                             account);
 591 }
 592
 593 static void
 594 on_accounts_reloaded   (TnyAccountStore *account_store,
 595                         gpointer user_data)
 596 {
 597         update_model (MODEST_FOLDER_VIEW (user_data),
 598                       MODEST_TNY_ACCOUNT_STORE(account_store));
 599 }
 600
 601 void
 602 modest_folder_view_set_title (ModestFolderView *self, const gchar *title)
 603 {
 604         GtkTreeViewColumn *col;
 605
 606         g_return_if_fail (self);
 607
 608         col = gtk_tree_view_get_column (GTK_TREE_VIEW(self), 0);
 609         if (!col) {
 610                 g_printerr ("modest: failed get column for title\n");
 611                 return;
 612         }
 613
 614         gtk_tree_view_column_set_title (col, title);
 615         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(self),
 616                                            title != NULL);
 617 }
 618
 619 GtkWidget*
 620 modest_folder_view_new (TnyFolderStoreQuery *query)
 621 {
 622         GObject *self;
 623         ModestFolderViewPrivate *priv;
 624         GtkTreeSelection *sel;
 625
 626         self = G_OBJECT (g_object_new (MODEST_TYPE_FOLDER_VIEW, NULL));
 627         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 628
 629         if (query)
 630                 priv->query = g_object_ref (query);
 631
 632         sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 633         priv->changed_signal = g_signal_connect (sel, "changed",
 634                                                  G_CALLBACK (on_selection_changed), self);
 635
 636         return GTK_WIDGET(self);
 637 }
 638
 639 /* this feels dirty; any other way to expand all the root items? */
 640 static void
 641 expand_root_items (ModestFolderView *self)
 642 {
 643         GtkTreePath *path;
 644         path = gtk_tree_path_new_first ();
 645
 646         /* all folders should have child items, so.. */
 647         while (gtk_tree_view_expand_row (GTK_TREE_VIEW(self), path, FALSE))
 648                 gtk_tree_path_next (path);
 649
 650         gtk_tree_path_free (path);
 651 }
 652
 653 /*
 654  * We use this function to implement the
 655  * MODEST_FOLDER_VIEW_STYLE_SHOW_ONE style. We only show the default
 656  * account in this case
 657  */
 658 static gboolean
 659 filter_row (GtkTreeModel *model,
 660             GtkTreeIter *iter,
 661             gpointer data)
 662 {
 663         gboolean retval = TRUE;
 664         gint type;
 665         GObject *instance = NULL;
 666
 667         gtk_tree_model_get (model, iter,
 668                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 669                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &instance,
 670                             -1);
 671
 672         if (type == TNY_FOLDER_TYPE_ROOT) {
 673                 TnyAccount *acc;
 674                 const gchar *account_id;
 675
 676                 acc = TNY_ACCOUNT (instance);
 677                 account_id = tny_account_get_id (acc);
 678
 679                 if (strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID) &&
 680                     strcmp (account_id, MODEST_MMC_ACCOUNT_ID)) {
 681                         ModestFolderViewPrivate *priv;
 682
 683                         /* Show only the visible account id */
 684                         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (data);
 685                         if (priv->visible_account_id && strcmp (account_id, priv->visible_account_id))
 686                                 retval = FALSE;
 687                 }
 688         }
 689
 690         g_object_unref (instance);
 691
 692         return retval;
 693 }
 694
 695 static gboolean
 696 update_model (ModestFolderView *self, ModestTnyAccountStore *account_store)
 697 {
 698         ModestFolderViewPrivate *priv;
 699         TnyList          *account_list;
 700         GtkTreeModel     *model;
 701
 702         g_return_val_if_fail (account_store, FALSE);
 703
 704         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 705
 706         /* Notify that there is no folder selected */
 707         g_signal_emit (G_OBJECT(self),
 708                        signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 709                        NULL, TRUE);
 710
 711         /* FIXME: the local accounts are not shown when the query
 712            selects only the subscribed folders. */
 713 /*      model        = tny_gtk_folder_store_tree_model_new (TRUE, priv->query); */
 714         model        = tny_gtk_folder_store_tree_model_new (TRUE, NULL);
 715         account_list = TNY_LIST(model);
 716
 717         tny_account_store_get_accounts (TNY_ACCOUNT_STORE(account_store),
 718                                         account_list,
 719                                         TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
 720         if (account_list) {
 721                 GtkTreeModel *filter_model = NULL, *sortable = NULL;
 722
 723                 sortable = gtk_tree_model_sort_new_with_model (model);
 724                 gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
 725                                                       TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 726                                                       GTK_SORT_ASCENDING);
 727                 gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (sortable),
 728                                                  TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 729                                                  cmp_rows, NULL, NULL);
 730
 731                 /* Create filter model */
 732                 if (priv->style == MODEST_FOLDER_VIEW_STYLE_SHOW_ONE) {
 733                         filter_model = gtk_tree_model_filter_new (sortable, NULL);
 734                         gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (filter_model),
 735                                                                 filter_row,
 736                                                                 self,
 737                                                                 NULL);
 738                 }
 739
 740                 /* Set new model */
 741                 gtk_tree_view_set_model (GTK_TREE_VIEW(self),
 742                                          (filter_model) ? filter_model : sortable);
 743                 expand_root_items (self); /* expand all account folders */
 744                 g_object_unref (account_list);
 745         }
 746
 747         return TRUE;
 748 }
 749
 750
 751 static void
 752 on_selection_changed (GtkTreeSelection *sel, gpointer user_data)
 753 {
 754         GtkTreeModel            *model;
 755         TnyFolderStore          *folder = NULL;
 756         GtkTreeIter             iter;
 757         ModestFolderView        *tree_view;
 758         ModestFolderViewPrivate *priv;
 759         gint                    type;
 760
 761         g_return_if_fail (sel);
 762         g_return_if_fail (user_data);
 763
 764         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(user_data);
 765         priv->cur_selection = sel;
 766
 767         /* folder was _un_selected if true */
 768         if (!gtk_tree_selection_get_selected (sel, &model, &iter)) {
 769                 if (priv->cur_folder_store)
 770                         g_object_unref (priv->cur_folder_store);
 771                 priv->cur_folder_store = NULL;
 772
 773                 /* Notify the display name observers */
 774                 g_signal_emit (G_OBJECT(user_data),
 775                                signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 776                                NULL);
 777                 return;
 778         }
 779
 780         tree_view = MODEST_FOLDER_VIEW (user_data);
 781
 782         gtk_tree_model_get (model, &iter,
 783                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 784                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 785                             -1);
 786
 787         /* If the folder is the same do not notify */
 788         if (priv->cur_folder_store == folder) {
 789                 g_object_unref (folder);
 790                 return;
 791         }
 792
 793         /* Current folder was unselected */
 794         if (priv->cur_folder_store) {
 795                 g_signal_emit (G_OBJECT(tree_view), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 796                                priv->cur_folder_store, FALSE);
 797                 g_object_unref (priv->cur_folder_store);
 798         }
 799
 800         /* New current references */
 801         priv->cur_folder_store = folder;
 802
 803         /* New folder has been selected */
 804         g_signal_emit (G_OBJECT(tree_view),
 805                        signals[FOLDER_SELECTION_CHANGED_SIGNAL],
 806                        0, folder, TRUE);
 807 }
 808
 809 TnyFolderStore *
 810 modest_folder_view_get_selected (ModestFolderView *self)
 811 {
 812         ModestFolderViewPrivate *priv;
 813
 814         g_return_val_if_fail (self, NULL);
 815
 816         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 817         if (priv->cur_folder_store)
 818                 g_object_ref (priv->cur_folder_store);
 819
 820         return priv->cur_folder_store;
 821 }
 822
 823 /*
 824  * This function orders the mail accounts following the next rules
 825  * 1st - remote accounts
 826  * 2nd - local account
 827  * 3rd - MMC account
 828  */
 829 static gint
 830 cmp_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *iter2,
 831           gpointer user_data)
 832 {
 833         gint cmp;
 834         gchar         *name1, *name2;
 835         TnyFolderType type;
 836         TnyFolder     *folder1, *folder2;
 837
 838         gtk_tree_model_get (tree_model, iter1,
 839                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name1,
 840                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 841                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder1,
 842                             -1);
 843         gtk_tree_model_get (tree_model, iter2,
 844                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name2,
 845                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder2,
 846                             -1);
 847
 848         /* Order must be: Remote accounts -> Local account -> MMC account */
 849         if (type == TNY_FOLDER_TYPE_ROOT) {
 850                 const gchar *account_id = tny_account_get_id (TNY_ACCOUNT (folder1));
 851                 const gchar *account_id2 = tny_account_get_id (TNY_ACCOUNT (folder2));
 852
 853                 if (!strcmp (account_id, MODEST_MMC_ACCOUNT_ID))
 854                         cmp = +1;
 855                 else {
 856                         if (!strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID)) {
 857                                 if (!strcmp (account_id2, MODEST_MMC_ACCOUNT_ID))
 858                                         cmp = -1;
 859                                 else
 860                                         cmp = +1;
 861                         } else {
 862                                 if (!strcmp (account_id2, MODEST_LOCAL_FOLDERS_ACCOUNT_ID) ||
 863                                     !strcmp (account_id2, MODEST_MMC_ACCOUNT_ID))
 864                                         cmp = -1;
 865                                 else
 866                                         cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 867                         }
 868                 }
 869         } else
 870                 cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 871
 872         if (folder1)
 873                 g_object_unref(G_OBJECT(folder1));
 874         if (folder2)
 875                 g_object_unref(G_OBJECT(folder2));
 876
 877         g_free (name1);
 878         g_free (name2);
 879
 880         return cmp;
 881 }
 882
 883 /*****************************************************************************/
 884 /*                        DRAG and DROP stuff                                */
 885 /*****************************************************************************/
 886
 887 /*
 888  * This function fills the #GtkSelectionData with the row and the
 889  * model that has been dragged. It's called when this widget is a
 890  * source for dnd after the event drop happened
 891  */
 892 static void
 893 on_drag_data_get (GtkWidget *widget,
 894                   GdkDragContext *context,
 895                   GtkSelectionData *selection_data,
 896                   guint info,
 897                   guint time,
 898                   gpointer data)
 899 {
 900         GtkTreeSelection *selection;
 901         GtkTreeModel *model_sort, *model;
 902         GtkTreeIter iter;
 903         GtkTreePath *source_row_sort;
 904         GtkTreePath *source_row;
 905
 906         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
 907         gtk_tree_selection_get_selected (selection, &model_sort, &iter);
 908         source_row_sort = gtk_tree_model_get_path (model_sort, &iter);
 909
 910         /* Get the unsorted path and model */
 911         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 912         source_row = gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 913                                                                      source_row_sort);
 914
 915         gtk_tree_set_row_drag_data (selection_data,
 916                                     model,
 917                                     source_row);
 918
 919         gtk_tree_path_free (source_row_sort);
 920         gtk_tree_path_free (source_row);
 921 }
 922
 923 typedef struct _DndHelper {
 924         gboolean delete_source;
 925         GtkTreePath *source_row;
 926         GdkDragContext *context;
 927         guint time;
 928 } DndHelper;
 929
 930
 931 /*
 932  * This function is the callback of the
 933  * modest_mail_operation_xfer_msgs () and
 934  * modest_mail_operation_xfer_folder() calls. We check here if the
 935  * message/folder was correctly asynchronously transferred. The reason
 936  * to use the same callback is that the code is the same, it only has
 937  * to check that the operation went fine and then finalize the drag
 938  * and drop action
 939  */
 940 static void
 941 on_progress_changed (ModestMailOperation *mail_op, gpointer user_data)
 942 {
 943         gboolean success;
 944         DndHelper *helper;
 945
 946         helper = (DndHelper *) user_data;
 947
 948         if (!modest_mail_operation_is_finished (mail_op))
 949                 return;
 950
 951         if (modest_mail_operation_get_status (mail_op) ==
 952             MODEST_MAIL_OPERATION_STATUS_SUCCESS) {
 953                 success = TRUE;
 954         } else {
 955                 success = FALSE;
 956         }
 957
 958         /* Notify the drag source. Never call delete, the monitor will
 959            do the job if needed */
 960         gtk_drag_finish (helper->context, success, FALSE, helper->time);
 961
 962         /* Free the helper */
 963         gtk_tree_path_free (helper->source_row);
 964         g_slice_free (DndHelper, helper);
 965 }
 966
 967 /*
 968  * This function is used by drag_data_received_cb to manage drag and
 969  * drop of a header, i.e, and drag from the header view to the folder
 970  * view.
 971  */
 972 static void
 973 drag_and_drop_from_header_view (GtkTreeModel *source_model,
 974                                 GtkTreeModel *dest_model,
 975                                 GtkTreePath  *dest_row,
 976                                 DndHelper    *helper)
 977 {
 978         TnyList *headers;
 979         TnyHeader *header;
 980         TnyFolder *folder;
 981         ModestMailOperation *mail_op;
 982         GtkTreeIter source_iter, dest_iter;
 983
 984         /* Get header */
 985         gtk_tree_model_get_iter (source_model, &source_iter, helper->source_row);
 986         gtk_tree_model_get (source_model, &source_iter,
 987                             TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
 988                             &header, -1);
 989
 990         /* Get Folder */
 991         gtk_tree_model_get_iter (dest_model, &dest_iter, dest_row);
 992         gtk_tree_model_get (dest_model, &dest_iter,
 993                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 994                             &folder, -1);
 995
 996         /* Transfer message */
 997         mail_op = modest_mail_operation_new (MODEST_MAIL_OPERATION_ID_RECEIVE, NULL);
 998
 999         modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
1000                                          mail_op);
1001         g_signal_connect (G_OBJECT (mail_op), "progress-changed",
1002                           G_CALLBACK (on_progress_changed), helper);
1003
1004         /* FIXME: I replaced this because the API changed, but D&D
1005            should be reviewed in order to allow multiple drags*/
1006         headers = tny_simple_list_new ();
1007         tny_list_append (headers, G_OBJECT (header));
1008         g_object_unref (header);
1009         modest_mail_operation_xfer_msgs (mail_op, headers, folder, helper->delete_source);
1010
1011         /* Frees */
1012         g_object_unref (G_OBJECT (mail_op));
1013         g_object_unref (G_OBJECT (header));
1014         g_object_unref (G_OBJECT (folder));
1015 }
1016
1017 /*
1018  * This function is used by drag_data_received_cb to manage drag and
1019  * drop of a folder, i.e, and drag from the folder view to the same
1020  * folder view.
1021  */
1022 static void
1023 drag_and_drop_from_folder_view (GtkTreeModel     *source_model,
1024                                 GtkTreeModel     *dest_model,
1025                                 GtkTreePath      *dest_row,
1026                                 GtkSelectionData *selection_data,
1027                                 DndHelper        *helper)
1028 {
1029         ModestMailOperation *mail_op;
1030         GtkTreeIter parent_iter, iter;
1031         TnyFolderStore *parent_folder;
1032         TnyFolder *folder;
1033
1034         /* Check if the drag is possible */
1035         if (!gtk_tree_path_compare (helper->source_row, dest_row) ||
1036             !gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (dest_model),
1037                                                    dest_row,
1038                                                    selection_data)) {
1039
1040                 gtk_drag_finish (helper->context, FALSE, FALSE, helper->time);
1041                 gtk_tree_path_free (helper->source_row);
1042                 g_slice_free (DndHelper, helper);
1043                 return;
1044         }
1045
1046         /* Get data */
1047         gtk_tree_model_get_iter (source_model, &parent_iter, dest_row);
1048         gtk_tree_model_get_iter (source_model, &iter, helper->source_row);
1049         gtk_tree_model_get (source_model, &parent_iter,
1050                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
1051                             &parent_folder, -1);
1052         gtk_tree_model_get (source_model, &iter,
1053                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
1054                             &folder, -1);
1055
1056         /* Do the mail operation */
1057         mail_op = modest_mail_operation_new (MODEST_MAIL_OPERATION_ID_RECEIVE, NULL);
1058         modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
1059                                          mail_op);
1060         g_signal_connect (G_OBJECT (mail_op), "progress-changed",
1061                           G_CALLBACK (on_progress_changed), helper);
1062
1063         modest_mail_operation_xfer_folder (mail_op,
1064                                            folder,
1065                                            parent_folder,
1066                                            helper->delete_source);
1067
1068         /* Frees */
1069         g_object_unref (G_OBJECT (parent_folder));
1070         g_object_unref (G_OBJECT (folder));
1071         g_object_unref (G_OBJECT (mail_op));
1072 }
1073
1074 /*
1075  * This function receives the data set by the "drag-data-get" signal
1076  * handler. This information comes within the #GtkSelectionData. This
1077  * function will manage both the drags of folders of the treeview and
1078  * drags of headers of the header view widget.
1079  */
1080 static void
1081 on_drag_data_received (GtkWidget *widget,
1082                        GdkDragContext *context,
1083                        gint x,
1084                        gint y,
1085                        GtkSelectionData *selection_data,
1086                        guint target_type,
1087                        guint time,
1088                        gpointer data)
1089 {
1090         GtkWidget *source_widget;
1091         GtkTreeModel *model_sort, *dest_model, *source_model;
1092         GtkTreePath *source_row, *dest_row, *child_dest_row;
1093         GtkTreeViewDropPosition pos;
1094         gboolean success = FALSE, delete_source = FALSE;
1095         DndHelper *helper;
1096
1097         /* Do not allow further process */
1098         g_signal_stop_emission_by_name (widget, "drag-data-received");
1099
1100         /* Get the action */
1101         if (context->action == GDK_ACTION_MOVE)
1102                 delete_source = TRUE;
1103
1104         /* Check if the get_data failed */
1105         if (selection_data == NULL || selection_data->length < 0)
1106                 gtk_drag_finish (context, success, FALSE, time);
1107
1108         /* Get the models */
1109         source_widget = gtk_drag_get_source_widget (context);
1110         gtk_tree_get_row_drag_data (selection_data,
1111                                     &source_model,
1112                                     &source_row);
1113
1114         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
1115         /* Select the destination model */
1116         if (source_widget == widget) {
1117                 dest_model = source_model;
1118         } else {
1119                 dest_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
1120         }
1121
1122         /* Get the path to the destination row. Can not call
1123            gtk_tree_view_get_drag_dest_row() because the source row
1124            is not selected anymore */
1125         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget), x, y,
1126                                            &dest_row, &pos);
1127
1128         /* Only allow drops IN other rows */
1129         if (!dest_row || pos == GTK_TREE_VIEW_DROP_BEFORE || pos == GTK_TREE_VIEW_DROP_AFTER)
1130                 gtk_drag_finish (context, success, FALSE, time);
1131
1132         /* Create the helper */
1133         helper = g_slice_new0 (DndHelper);
1134         helper->delete_source = delete_source;
1135         helper->source_row = gtk_tree_path_copy (source_row);
1136         helper->context = context;
1137         helper->time = time;
1138
1139         /* Get path from the unsorted model */
1140         child_dest_row =
1141                 gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
1142                                                                 dest_row);
1143         gtk_tree_path_free (dest_row);
1144
1145         /* Drags from the header view */
1146         if (source_widget != widget) {
1147
1148                 drag_and_drop_from_header_view (source_model,
1149                                                 dest_model,
1150                                                 child_dest_row,
1151                                                 helper);
1152         } else {
1153
1154
1155                 drag_and_drop_from_folder_view (source_model,
1156                                                 dest_model,
1157                                                 child_dest_row,
1158                                                 selection_data,
1159                                                 helper);
1160         }
1161
1162         /* Frees */
1163         gtk_tree_path_free (source_row);
1164         gtk_tree_path_free (child_dest_row);
1165 }
1166
1167 /*
1168  * We define a "drag-drop" signal handler because we do not want to
1169  * use the default one, because the default one always calls
1170  * gtk_drag_finish and we prefer to do it in the "drag-data-received"
1171  * signal handler, because there we have all the information available
1172  * to know if the dnd was a success or not.
1173  */
1174 static gboolean
1175 drag_drop_cb (GtkWidget      *widget,
1176               GdkDragContext *context,
1177               gint            x,
1178               gint            y,
1179               guint           time,
1180               gpointer        user_data)
1181 {
1182         gpointer target;
1183
1184         if (!context->targets)
1185                 return FALSE;
1186
1187         /* Check if we're dragging a folder row */
1188         target = gtk_drag_dest_find_target (widget, context, NULL);
1189
1190         /* Request the data from the source. */
1191         gtk_drag_get_data(widget, context, target, time);
1192
1193     return TRUE;
1194 }
1195
1196 /*
1197  * This function expands a node of a tree view if it's not expanded
1198  * yet. Not sure why it needs the threads stuff, but gtk+`example code
1199  * does that, so that's why they're here.
1200  */
1201 static gint
1202 expand_row_timeout (gpointer data)
1203 {
1204         GtkTreeView *tree_view = data;
1205         GtkTreePath *dest_path = NULL;
1206         GtkTreeViewDropPosition pos;
1207         gboolean result = FALSE;
1208
1209         GDK_THREADS_ENTER ();
1210
1211         gtk_tree_view_get_drag_dest_row (tree_view,
1212                                          &dest_path,
1213                                          &pos);
1214
1215         if (dest_path &&
1216             (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
1217              pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)) {
1218                 gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
1219                 gtk_tree_path_free (dest_path);
1220         }
1221         else {
1222                 if (dest_path)
1223                         gtk_tree_path_free (dest_path);
1224
1225                 result = TRUE;
1226         }
1227
1228         GDK_THREADS_LEAVE ();
1229
1230         return result;
1231 }
1232
1233 /*
1234  * This function is called whenever the pointer is moved over a widget
1235  * while dragging some data. It installs a timeout that will expand a
1236  * node of the treeview if not expanded yet. This function also calls
1237  * gdk_drag_status in order to set the suggested action that will be
1238  * used by the "drag-data-received" signal handler to know if we
1239  * should do a move or just a copy of the data.
1240  */
1241 static gboolean
1242 on_drag_motion (GtkWidget      *widget,
1243                 GdkDragContext *context,
1244                 gint            x,
1245                 gint            y,
1246                 guint           time,
1247                 gpointer        user_data)
1248 {
1249         GtkTreeViewDropPosition pos;
1250         GtkTreePath *dest_row;
1251         ModestFolderViewPrivate *priv;
1252         GdkDragAction suggested_action;
1253         gboolean valid_location = FALSE;
1254
1255         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (widget);
1256
1257         if (priv->timer_expander != 0) {
1258                 g_source_remove (priv->timer_expander);
1259                 priv->timer_expander = 0;
1260         }
1261
1262         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
1263                                            x, y,
1264                                            &dest_row,
1265                                            &pos);
1266
1267         /* Do not allow drops between folders */
1268         if (!dest_row ||
1269             pos == GTK_TREE_VIEW_DROP_BEFORE ||
1270             pos == GTK_TREE_VIEW_DROP_AFTER) {
1271                 gtk_tree_view_set_drag_dest_row(GTK_TREE_VIEW (widget), NULL, 0);
1272                 gdk_drag_status(context, 0, time);
1273                 valid_location = FALSE;
1274                 goto out;
1275         } else {
1276                 valid_location = TRUE;
1277         }
1278
1279         /* Expand the selected row after 1/2 second */
1280         if (!gtk_tree_view_row_expanded (GTK_TREE_VIEW (widget), dest_row)) {
1281                 gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), dest_row, pos);
1282                 priv->timer_expander = g_timeout_add (500, expand_row_timeout, widget);
1283         }
1284         gtk_tree_path_free (dest_row);
1285
1286         /* Select the desired action. By default we pick MOVE */
1287         suggested_action = GDK_ACTION_MOVE;
1288
1289         if (context->actions == GDK_ACTION_COPY)
1290             gdk_drag_status(context, GDK_ACTION_COPY, time);
1291         else if (context->actions == GDK_ACTION_MOVE)
1292             gdk_drag_status(context, GDK_ACTION_MOVE, time);
1293         else if (context->actions & suggested_action)
1294             gdk_drag_status(context, suggested_action, time);
1295         else
1296             gdk_drag_status(context, GDK_ACTION_DEFAULT, time);
1297
1298  out:
1299         g_signal_stop_emission_by_name (widget, "drag-motion");
1300         return valid_location;
1301 }
1302
1303
1304 /* Folder view drag types */
1305 const GtkTargetEntry folder_view_drag_types[] =
1306 {
1307         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, MODEST_FOLDER_ROW },
1308         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_APP,    MODEST_HEADER_ROW }
1309 };
1310
1311 /*
1312  * This function sets the treeview as a source and a target for dnd
1313  * events. It also connects all the requirede signals.
1314  */
1315 static void
1316 setup_drag_and_drop (GtkTreeView *self)
1317 {
1318         /* Set up the folder view as a dnd destination. Set only the
1319            highlight flag, otherwise gtk will have a different
1320            behaviour */
1321         gtk_drag_dest_set (GTK_WIDGET (self),
1322                            GTK_DEST_DEFAULT_HIGHLIGHT,
1323                            folder_view_drag_types,
1324                            G_N_ELEMENTS (folder_view_drag_types),
1325                            GDK_ACTION_MOVE | GDK_ACTION_COPY);
1326
1327         g_signal_connect (G_OBJECT (self),
1328                           "drag_data_received",
1329                           G_CALLBACK (on_drag_data_received),
1330                           NULL);
1331
1332
1333         /* Set up the treeview as a dnd source */
1334         gtk_drag_source_set (GTK_WIDGET (self),
1335                              GDK_BUTTON1_MASK,
1336                              folder_view_drag_types,
1337                              G_N_ELEMENTS (folder_view_drag_types),
1338                              GDK_ACTION_MOVE | GDK_ACTION_COPY);
1339
1340         g_signal_connect (G_OBJECT (self),
1341                           "drag_motion",
1342                           G_CALLBACK (on_drag_motion),
1343                           NULL);
1344
1345         g_signal_connect (G_OBJECT (self),
1346                           "drag_data_get",
1347                           G_CALLBACK (on_drag_data_get),
1348                           NULL);
1349
1350         g_signal_connect (G_OBJECT (self),
1351                           "drag_drop",
1352                           G_CALLBACK (drag_drop_cb),
1353                           NULL);
1354 }
1355
1356 /*
1357  * This function manages the navigation through the folders using the
1358  * keyboard or the hardware keys in the device
1359  */
1360 static gboolean
1361 on_key_pressed (GtkWidget *self,
1362                 GdkEventKey *event,
1363                 gpointer user_data)
1364 {
1365         GtkTreeSelection *selection;
1366         GtkTreeIter iter;
1367         GtkTreeModel *model;
1368         gboolean retval = FALSE;
1369
1370         /* Up and Down are automatically managed by the treeview */
1371         if (event->keyval == GDK_Return) {
1372                 /* Expand/Collapse the selected row */
1373                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
1374                 if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
1375                         GtkTreePath *path;
1376
1377                         path = gtk_tree_model_get_path (model, &iter);
1378
1379                         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (self), path))
1380                                 gtk_tree_view_collapse_row (GTK_TREE_VIEW (self), path);
1381                         else
1382                                 gtk_tree_view_expand_row (GTK_TREE_VIEW (self), path, FALSE);
1383                         gtk_tree_path_free (path);
1384                 }
1385                 /* No further processing */
1386                 retval = TRUE;
1387         }
1388
1389         return retval;
1390 }
1391
1392 /*
1393  * We listen to the changes in the local folder account name key,
1394  * because we want to show the right name in the view. The local
1395  * folder account name corresponds to the device name in the Maemo
1396  * version. We do this because we do not want to query gconf on each
1397  * tree view refresh. It's better to cache it and change whenever
1398  * necessary.
1399  */
1400 static void
1401 on_configuration_key_changed (ModestConf* conf,
1402                               const gchar *key,
1403                               ModestConfEvent event,
1404                               ModestFolderView *self)
1405 {
1406         ModestFolderViewPrivate *priv;
1407
1408         if (!key)
1409                 return;
1410
1411         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
1412
1413         if (!strcmp (key, MODEST_CONF_DEVICE_NAME)) {
1414                 g_free (priv->local_account_name);
1415
1416                 if (event == MODEST_CONF_EVENT_KEY_UNSET)
1417                         priv->local_account_name = g_strdup (MODEST_LOCAL_FOLDERS_DEFAULT_DISPLAY_NAME);
1418                 else
1419                         priv->local_account_name = modest_conf_get_string (modest_runtime_get_conf(),
1420                                                                            MODEST_CONF_DEVICE_NAME, NULL);
1421
1422                 /* Force a redraw */
1423 #if GTK_CHECK_VERSION(2, 8, 0) /* gtk_tree_view_column_queue_resize is only available in GTK+ 2.8 */
1424                 GtkTreeViewColumn * tree_column = gtk_tree_view_get_column (GTK_TREE_VIEW (self),
1425                                                                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN);
1426                 gtk_tree_view_column_queue_resize (tree_column);
1427 #endif
1428         }
1429 }
1430
1431 void
1432 modest_folder_view_set_style (ModestFolderView *self,
1433                               ModestFolderViewStyle style)
1434 {
1435         ModestFolderViewPrivate *priv;
1436
1437         g_return_if_fail (self);
1438
1439         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
1440
1441         priv->style = style;
1442 }
1443
1444 void
1445 modest_folder_view_set_account_id_of_visible_server_account (ModestFolderView *self,
1446                                                              const gchar *account_id)
1447 {
1448         ModestFolderViewPrivate *priv;
1449         ModestConf *conf;
1450         GtkTreeModel *model;
1451
1452         g_return_if_fail (self);
1453
1454         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
1455
1456         if (priv->visible_account_id)
1457                 g_free (priv->visible_account_id);
1458         priv->visible_account_id = g_strdup (account_id);
1459
1460         /* Save preferences */
1461         conf = modest_runtime_get_conf ();
1462         modest_widget_memory_save (conf, G_OBJECT (self), MODEST_CONF_FOLDER_VIEW_KEY);
1463
1464         /* Refilter */
1465         model = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
1466         if (GTK_IS_TREE_MODEL_FILTER (model))
1467                 gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (model));
1468 }
1469
1470 const gchar *
1471 modest_folder_view_get_account_id_of_visible_server_account (ModestFolderView *self)
1472 {
1473         ModestFolderViewPrivate *priv;
1474
1475         g_return_val_if_fail (self, NULL);
1476
1477         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
1478
1479         return (const gchar *) priv->visible_account_id;
1480 }